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        Shot Blast Machine Terminology

        A quick A-to-Z of shot blasting and surface preparation machine terms

        Usually, the names of the machines describe how the component passes through the machine. 

        But sometimes the name describes the component to be treated, the chamber in which the component is treated, or the form of treatment. Added to that you need to determine how you want the components to flow through your production process.

        The Flow

        Term Explanation

        Batch                                                                                    

        A batch or group of components enter the blast chamber together, are processed together, and exit the chamber together through the same chamber opening.

        Example: MB Batch Type Tumblast Machine

        Continuous

        The movement of components through the blast chamber and to the next process is continuous, normally without stopping.

        Example: CT Continuous Tumblast Machine

        Inline or In-line

        The movement of components through the blast chamber and to the next process is achieved in one continuous line. However, the line may pause to allow the components in the blast chamber to be blasted in one concentrated area.

        Example: DHB-C Pass-Through Monorail Machine

        Indexing

        The components move into the blast chamber, are stationary, then move to the next process.

        Closed Loop

        The components are fed through the blast chamber on a circular (closed loop) transportation device. They therefore have to be loaded and unloaded from the transportation device.

        Example: DHB-C Pass-Through Monorail Machine 

        Through-feed or Pass Through

        Components enter the blast chamber via one opening, and exit from another. The components are transported at a constant (yet variable) speed.

        Example: Roller conveyor machines 

        Rotary through-feed  

        As in through-feed, but the components are rotated while passing through the machine. 

        Example: RDS Spring Peening systems

        Closed Circuit

        Closed Circuit describes the movement of the abrasive. Closed circuit machines are compact portable air blast machines and move to the component to be blasted. 

        Example: Closed circuit blast machine


        Component Movement Names

        Term 
         Explanation

        Hanger type, or Overhead rail                                                                                                  

        Components are suspended on a hanger or tree hanging from a rail. The tree is then transported into the blast chamber, where it is blasted often while rotating. Once blasted, the hanger is transported back out of the chamber – usually from the same entrance. It is common to have a track or rail in a Y formation, allowing two hangers, so that a new batch of parts can be loaded, while one batch is being processed.

        Example: HT Overhead Monorail Machine

        Monorail, or Pass-through monorail

        As above, but this time the rail is continuous, or circular (closed loop), and passes completely through the blast chamber.

        Example: DHB D Pass Through Monorail Machine

        Frame machine

         
        Components are fixed or hung in a frame, the frame moves into the blast chamber and airblast robots blast the components. The frames can be stationary while in the blast chamber, indexing or continuously moving. The Frames pass through the chamber. 

        Spinner hanger

         

        The hanger is fixed inside the blast chamber. The blast chamber usually has two compartments, so that parts can be unloaded and loaded in one compartment while the hanger in the other compartment is being blasted. The hanger spins to achieve complete coverage.

        Example: SPH Spinner-Hanger Type Machine

        Roller conveyor

         

        Components – usually long and low parts such as plate steel and H bars – are rolled on bars, on a conveyor line through the blast chamber. The components are transported at a constant (yet variable) speed. Blast wheels are positioned above, and sometimes below the conveyor, to blast the parts.

        Example: Roller Conveyor Type HD

        Work car, or Bogie table

        The Work car – essentially a table on wheels moving along a track – is used to transport heavy components and fabrications, such as bridge girders and large weldments or castings, into the blast chamber. Work cars can pass through the chamber, or enter and exit from the same door. They can also rotate if required

        Example: Work Car BGM Machine

        Tumblast

        Components are tipped into a tumbling barrel-type drum. They gently roll over each other, are blasted, and are tipped out again via the same opening. The drum can be made of a wear-resistant rubber or steel conveyor. 

        Example: MB Batch Type Tumblast Machine

        Polygon-drum systems

        Polygon drum systems are polygon-shaped troughs which rock back and forth to gently tumble the parts while blasting.

        Example: DTC Batch Type Tumblast Machine

        Horizontal belt

        Components are conveyed (linear transportation) at a constant speed (variable) along a belt through the blast chamber. Belts can be made of hard wearing rubber, or steel mesh/manganese mesh.

        Chamber Descriptions

        Term

        Explanation

        Manual or Hand cabinet                                   

        Airblast application – a component is loaded in a cabinet, via a side door, where it is blasted by hand. Gloves are in-built into the machine, the operator inserts his hands into the gloves, picks up a hose/nozzle, and manually blasts the part

        Blastroom


        Parts are transported into a room, where an operator in a full suit and helmet, will manually blast the components – although automated versions are also available.
        Example: Blastroom

        Component Descriptions

        Term

         Explanation

        Concrete block machine                                                                           

        A horizontal wheel blast machine to give a high quality finish to concrete blocks and paving slabs. Linear transportation, at variable constant speed.

        Example: Concrete Block machine

        Pipe machine

        Pipes are transported through the machine on a skew roll conveyor to turn the pipe while the blast stream removes mill scale and rust.

        Example: Pipe machine

        Stress peening system

        For shot peening springs. A predefined load is applied to each spring during peening on a satellite table machine. 

        Example: SRS Stress peening machine

        Strip descaling

        Narrow, medium and wide steel strip is fed through a machine horizontally as part of an integrated processing line.

        Example: Strip descaling machine

        Wire bar and billet descaling

        Single or multiple strands of wires and bars are fed through the machine, which can be standalone, or integrated into a drawing line.

        Example: Wire, Bar and Billet Descaling

        Preservation line

        A preservation line is a roller conveyor machine which transports sheet steel through many processes including preheating, shot blast cleaning, priming and drying.

        Example: Preservation Line

        Internal cleaning

        The airblast advanced internal cleaning machine is a pass through, horizontal machine. A roller conveyor transports the component – cylinder heads, motor blocks, crank cases etc. – into the blast chamber, where a pivoting device lifts the component towards the nozzles. Pivoting nozzles may also simultaneously blast the underside apertures and bores.

        Example: Advanced Internal Cleaning machine (AIC)

        Gear peening cells

        Airblast, satellite table machines with specific tooling to hold and rotate parts, With complex parts recognition technology for precise, process reliable, repeatable shot peening results.

        Example CFX 600


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